Apparatus for making heddle-eyes.



G. LINNERTZ.

APPARATUS FOR MAKING HEDDLE EYES.

APPLICATION FILED 0OT.9, 1911.

Patented Apr. 1, 1913.

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G. LINNERTZ.

APPARATUS FOR. MAKING 11mm EYES.

APPLIOATION FILED 001.9, 1911. 1,()57 968 Patented Apr. 1, 1913.

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L figs 0 WITNESSES ag gf W 9 G mm Q X GUSTAV LINNERTZ, OF ELBERFELD,GERMANY.,,

APPARATUS FOR MAKING HEDDLE-EYES.

Original application fileriMay 6, 1911, Serial No. 625,632. Divided andthis Serial No. 653,524.

Specification of Letters Patent.

Patented Apr. 1, 1913.

application filed October 9,

To all whom it may concern:

Be it known that I, GUSTAV LINNERTZ, a subject of the Emperor ofGermany, residing at 6 Ewaldstrasse, Elberfeld, Germany, have inventednew and useful Improvements in Apparatus for Making Heddle-Eyes, ofwhich the following is a specification.

This application is a division of my application Serial N 0. 625632,filed May 6th, 1911.

This invention relates to an improved apparatus for making heddle eyesfrom a single piece of steel wire.

In manufacturing these heddles of springy steel wire the production ofthe eye for the thread presents difficulties, inasmuch as the wiresprings back after the eye has been formed by bending the wire over amandrel which causes the eye to open. It has been attempted heretoforeto obviate this drawback by subjecting the thread eye to a strongpressure after bending the wire. Heddles produced in this manner arefound to be weakened at the portions adjacent to the eye, which is aserious defect more especially in the manufacture of fine fabrics.

The present invention is distinguished by the fact that the formation ofthe steel wire into the thread eye is efiected exclusively by bending,thereby enabling heddles to be produced which can be used in themanufacture of very fine materials such as silk or the like. The heddleis thus bent and formed with an eye the aXis of which is at right anglesto the heddle and retains this position without any pressing operationbeing necessary.

The improved apparatus will now be described with reference to theaccompanying drawings, in which Figures 1 to 4 are a series ofelevations each accompanied by a plan of the lower mandrel which showsthe position from which the respective elevation is regarded,

Fig. 5 is a sectional plan illustrating awire blank in the act of beingpresented to the mandrel. Fig. 6 is an elevation of the wire blank afterpassing between the mandrel parts and before the latter have beenbrought together. Fig. 7 is a rear view of Fig. 6 after the mandrelparts have been brought together and the ends of the wire have beenmoved around through 180 in opposite directions. Fig. 8 is a plan of themandrel 4 is indicated in broken lines.

lower mandrel part and of the wire blank when the ends of the latterhave been moved through a little more than 270. Fig. 9 is a view similarto' Fig. 7 but showing certain abutments in operative position. Fig. 10is a similar View but showing the mandrel rods and the abutments cantedcounterclockwise. Fig. 11 is a similar View but showing the parts cantedslightly in the clockwise direction. Fig. 12 is a plan of the lowermandrel and the abutments and shows the blank after it has been bent asshown in the previous figures. Figs. 13, 14 and 15 are difierent viewsof the finished heddle. Figs. 16 and 17 are plans illustrating certainrelative positions of the alined mandrels at one stage of the bendingprocess and Figs. 18 and 19 are plans illustrating difierent relativepositions of the alined mandrels at another stage of the process thelatter positions being attained by turning the mandrels relatively aboutthe common axis. Figs. 20 and 21 are plans of the upper and lower partsrespectively of the mandrel.

In Figs. 1 to 4, 1 and 2 are the mandrel rods, 3 and 4 are the mandrelparts correspending in length to the thickness of the central eye orthread eye to be formed. The

mandrel is thus divided in its middle and as seen in the drawing isadapted to receive two thicknesses of wire. In the plan views, Figs. 1to 4 of the lower mandrel, the upper Each mandrel is adapted toaccommodate only one thickness of wire, so that the wire when formedinto an eye lies with part of its upper surface against the shoulderabove the upper mandrel, and with part of its opposite surface againstthe shoulder below the lower mandrel as seen in Fig. 7. This isfacilitated by the provision of the inclined projections The abutments12 and 13 which are em ployed as hereinafter described are provided eachwith a shoulder 14 for engaging the heddle wire in the horizontaldirection at the parts adjoining the thread eye and with a shoulder 15which during the bending operation serves as an abutment for the saidparts in the vertical plane. These abutments are arranged one on eitherside of the mandrel and are movable in the direction of the axis of themandrel.

The forming of a thread eye or central eye on a wire heddle blank iscarried out in such manner that the mandrel around which the eye is bentis canted (after theformation of the thread eye) together with the twoabutments first in one direction to the position shown in Fig. 10 andthen, after moving the shoulders 15 against the wire, the mandrel andabutments are canted in the opposite direction to the position shown inFig. 11, the ends of the heddle being secured laterally, be displaced asdesired with regard to the heddle ends.

The operation is as follows: The heddle Wire blank 5 in which the threadeye is to be formed has its previously formed end eyes engaged withprojecting pins 6 on a feed plate 7 and is transferred from the latterto two arms 8 by which it is carried during the formation of the threadeye. These arms 8 are adapted to swing about the longitudinal axis ofthe mandrel. In order to facilitate the insertion of the heddle wirebetween the rear portions of the mandrel rods, the mandrel rods may beprovided with inclined surfaces 10. During the insertion of the heddleblank the two halves of the mandrel are moved sufficiently apart toenable the heddle to be passed between them as seen in Fig. 6 and theheddle wire is thus brought against the rear portion of the mandrel. Themandrel then closes as seen in Fig. 7 and the bending fingers 8 swingaround the mandrel through about three quarters of a revolution andbring shown in Fig. 8. During the first part of this operation thesurfaces of the mandrel which lie toward the rear parts 10 are inalinement as seen in Fig. 16 and form the rear part or side of thethread eye as seen in Fig. 17 but during the latter part of the saidoperation the mandrel parts turn slightly in relation to one another andtheir front surfaces come into alinement as seen in Fig. 18 and form thepart of the loop as seen in Fig. 1

19. The abutments 12 and 13 are now advanced from the position seen inFig. 7 to the position seen in Fig. 9 so that the shoulders 14 and 15are in the supporting posi tion and the arms 8 then return holding thewire under tension. movement of the arms 8 the parts of the wireadjacent to the thread eye are supported in the horizontal direction bythe shoulder 14:. Simultaneously with the return movement of the armsthe mandrel together with the abutments is canted first in the onedirection to the position seen in Fig. 10 and the shoul' ders 15 arethen brought close against the heddle wire. The mandrel together withthe abutments is now canted in the other direction to the position seenin Fig. 11. By the tilting or canting in two opposite directions and bythe aid of the abutments the thread whereby the thread eye may 1 thewire ends to the position.

During this return eye is displaced as desired in relation to the twowire end s. The canting is carried out in both directions somewhatbeyond the amount which is apparently necessary so that upon the returnof the mandrel the eye assumes exactly the required position relativelyof the heddle ends and also remains in this position. In this manner theheddle eye is completely formed without any compression of the wire, andit is therefore only necessary to solder the ends of the eye in order tofinish the heddle.

I claim:

1. A two-part mandrel for forming'the eyes of wire heddles, comprisingtwo rods of relatively large diameter, a projecting mandrel part ofsmaller diameter on the end of each rod, merging inclined surfaces onthe ends of each rod and on said mandrel parts, anal wire blank carriersrotatable about said ro s.

2. A two-part mandrel for forming the eyes of wire heddles, comprisingtwo rods of relatively large diameter, a projecting mandrel-part ofsmaller diameter on the end of each rod, axially reciprocable abutmentsarranged one on either side of the rods, the abutment on one side havinga downwardly ext-ending abutting surface and the abutment on the otherside having an upwardly extending abutting surface, said abutments beingadapted to move from opposite points to a position opposite the eye ofthe heddle, angl wire-blank carriers rotatable about said ro s.

3. A two-part mandrel for forming the eyes of wire heddles, comprisingtwo rods of relatively large diameter, a projecting mandrel-part ofsmaller diameter on the end of each rod, axially reciprocable abutmentsarranged one on either side of the rods; said abutments each havinglateral and vertical abutment surfaces and being adapted to move fromopposite point-s into engagement with the wire blank, and wire-blankcarriers adapted to engage end eyes of the heddles and to rotate inopposite directions around said mandrel.

4;. A two-part mandrel for forming the eyes of wire heddles, comprisingtwo rods of relatively large diameter, a projecting man drel-part ofsmaller diameter on the end of each rod, each mandrel part being adaptedto oscillate relatively about the longitudinal axis in order to formrespectively opposite sides of said eye, and wire-blank carriers adaptedto engage end eyes of the heddles and to rotate in opposite directionsaround said mandrel.

5. A two-part mandrel for forming the eyes of wire heddles, comprisingtwo rods formed with annular shoulders at their ends, abutments arrangedone on either side of said rods and having respectively upwardly anddownwardly presented abutment 'surfaces, said abutments being adapted tomove name to this specification in the presence of axially from oppositepoints toward said two subscribing Witnesses.

mandrel, and wlre-blank carriers rotatable v about said mandrel; saidmandrel and abut- GUSTAV LINNERTZ' 5 ments being adapted to be canted incom- Witnesses:

pany and in relation to said carriers. ALBERT I. NUFER,

In testimony whereof I have signed my L. NUFER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0. a

